Oil-burner.



No. 735,014. PATENTED JULY 28. 1903. A. DAVIS.

i OIL BURNER.,

APPLIoATIoN FILED APB. a, 1902.

NO MODEL.

4 Tun UNITED STATES ratentea July 2s, 1903:.

PATENT OFFICE.

OIL-BURNER.

SPECIFICATION forming part of Letters Patent N o. 735,014, dated July 28, 1903.

Application filed April 3, 1902. Serial No. 101,218. (No model.)

To a/ZZ 1077/0712/ t may concern.-

lBe it known that I, AXEL DAVIS, a citizen of the United States, and a resident of the city and county of San Francisco, State of California, have invented certain new and useful Improvements in Oil-Burners for Furnaces; and I do hereby declare the following to be a full, clear, and exact description of said invention, such as will enable others skilled in the art to which it most nearly appertains to make, use, and practice the same.

My invention relates to an improved burner for burning hydrocarbon oils in stoves and furnaces for cooking and heating purposes;

and it consists of the devices and arrangementl hereinafter described.

Referring to the accompanying drawings,

y Figure lis a side elevation, partly in section,

showing the burner supported in its inclosing frame. Fig. 2 is a horizontal section of the circulating burner-coil. Fig. 3 is a vertical end section taken through the lines X X,

Fig. 2. Fig. 4 is a front view of the slotted regulating-screw, and Fig. 5 is a vertical section of the regulating-screw.

A is a box-shaped metallic casing, having an open bottom and provided with a removable cover B. The lower part of the casing is preferably narrower than the top portion, and the intermediate ledge C serves as a shelf to support the oil-pipes and burner-tubes, as shown at Fig. l. A flange D extends horizontally around the casing, so that when the grate-bars of the stove or furnace are removed the casing containingthe burner can be supported inside the furnace by the ange D upon the same projection that previously su pported the grate-bars or upon any other lug or projection specially prepared to support it.

E is the feed-pipe which conveys the oil to the burner. It passes up and connects with the circulating-tubes F on one side of the burner, as shown at Fig. 2. The circulatingtube F passes around in the manner of a horizontal coil, leaving a narrow space g between the coils for the flame to pass through, and its center tube has a short depending tube H extending vertically downward from it, the lower end of which connects with the middle of a horizontal tube I, or the lower end of this vertical tube can be bent to a horizontal position when it is only desired to use a single burner; but ordinarily the horizontal tube I, connected at its middle, will be used, so that a jet or flame can be used on each side of the vertical tube. The ends of the horizontal tube lare sealed or closed, and a screw-thread ed hole Z is made near each end, preferably on top of the tube and connects with the interior of the tube. In this screw-threaded hole I insert a slotted screw m. (Shown at Figs. 4- and 5.) This screw can have a crank-handle R or not,v as preferred. The slot o in this screw is made on a bevel, deepest at the extremity of the screw and inclining outward at a regular pitch, so that when the screw is inserted into the screw-threaded hole Zthe size of the passage made by the slot isregulated by its position in the hole.

The ends of the horizontal pipe are wrapped with al covering of asbestos P for the purpose hereinafter indicated.

In the operation of this burner thel oil is fed, either by gravity'or pressure, through the pipe E into the coils F and circulates through them and thence into the horizontal tube I. For preliminarily heating the coils andvaporizing the oil contained in the coil the asbestos-wrapping P is first saturated with oil and set on fire. This causes a dame which surrounds the coil and starts vaporization of the oil contained in them. y By the time the oil is burned from the saturated asbestos the oil in the coil has commenced to vaporize, so that the vapor begins to issue from and through the slotted holes o in the screws m, and this vapor being ignited by the ame from the saturated asbestos produces two jets which will keep up the heat necessary to produce continued vaporization. By turning the crank-handle R the size of the opening for the vapor can be regulated to produce a larger or smaller llame, as desired. The rotation of the screw in the threaded hole also removes any accumulation of carbon which might be deposited in the hole.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

An oil-burner for furnaces consisting of a casing; a support for saidv casing; a tubular horizontally-disposed coil in said casing TOO connected with a source of oil-supply; a cenvertical, and means for rotating said screw, lo tral depending tube connected with the intesubstantially as described. rior end of said coil; a burner-tip connected In witness whereof I have hereunto signed with the lower end of said depending tube; my name. 5 asbestos Wrapping around said burner-tip; a

' screw-threaded hole in said burner-tip a lon- AXEL DAVIS' gitudinally-slotted screw adapted to turn in Witnesses: said hole, said slot being inclined or beveled W. E. CUSHMAN, lengthwise of the screw while its sides are EDWIN W'. WOODWARD. 

